The element with atomic number 2 is similar in chemical properties to the element with atomic number 20
Correct or Incorrect?
Do you think He, as a gas, as similar properties to Ca, as a solid?
are He and Ca in the same column of the periodic table?
2 is helium ... 20 is calcium
its a yes or no question I know 2 is helium and 20 is calcium
Incorrect.
Explanation:
To determine the correctness of this statement, we need to compare the chemical properties of elements with atomic numbers 2 and 20.
The element with atomic number 2 is helium (He), which is a noble gas. Noble gases are known for their stability and lack of reactivity due to having a full valence electron shell.
On the other hand, the element with atomic number 20 is calcium (Ca), which is an alkaline earth metal. Alkaline earth metals are highly reactive and tend to lose two electrons to form a +2 cation.
Given that helium and calcium belong to different groups in the periodic table, they have different chemical properties. Hence, the statement is incorrect.